Open WebUI: ReDoS in skill-mention regexes causes whole-instance DoS on default config

Summary Two regexes in backend/openwebui/utils/middleware.py that parse skill-mention tags backtrack in On² on input that contains . Both run synchronously, on the asyncio event loop, on every chat completion with no feature gate. Because the default deployment is a single uvicorn worker, one suc...

EUVD-2026-42620

Open WebUI: Scheduled automations continue after pending-user deactivation and stored model ACL revocation...

Timing Attack

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Timing Attack via the signin process. An attacker can determine whether specific email addresses are registered by measuring the response time of authentication attempts. Remediation Upgrade open-webui to...

EUVD-2026-42617

Open WebUI: Account enumeration via observable login timing discrepancy...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-59218 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-59218 Source advisory: OSV:GHSA-7RW5-9F7Q-XJ36...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-59218 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-59218 Source advisory: GHSA-7RW5-9F7Q-XJ36...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-59218 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-59218 Source advisory: SNYK:PYTHON-OPENWEBUI-18307448...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-59214 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-59214 Source advisory: SNYK:PYTHON-OPENWEBUI-18307453...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-59214 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-59214 Source advisory: OSV:GHSA-4R2P-27MH-5M22...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-59214 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-59214 Source advisory: GHSA-4R2P-27MH-5M22...

EUVD-2026-42616

Open WebUI: Stored web worker XSS via Pyodide...

@darthcav/ts-http-server (0.9.1), @digitalpaws/starr (0.0.2) +5 more potentially affected by CVE-2026-15074 via @fastify/static (10.1.0)

@fastify/static NPM version 10.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on @fastify/static and may be impacted: - @darthcav/ts-http-server 0.9.1 - @digitalpaws/starr 0.0.2 - @node-cli/static-server =3.1.17, =9.0.0-canary.19, =9.0.2 -...

CVE-2026-66032

libssh2

CVE-2026-66032

libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSHFXPOPEN with SSHFXPSTATUS containin...

EUVD-2026-48719

libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSHFXPOPEN with SSHFXPSTATUS containin...

CVE-2026-66032

libssh2 through 1.11.1, fixed in commit 5e47761, contains a double-free vulnerability in the sftpopen function in src/sftp.c that allows a malicious SSH server to corrupt the heap of any authenticated client opening an SFTP session. When a server responds to SSHFXPOPEN with SSHFXPSTATUS containin...

SUSE CVE-2026-63317

Arbitrary Class Instantiation via XML Feature Generator Descriptor and Format Name in Apache OpenNLP Versions Affected: - before 2.5.10 - before 3.0.0-M5 Description: Three code paths in Apache OpenNLP load a class by its fully-qualified name via Class.forName and invoke its no-arg constructor...

Open Redirect

Overview @backstage/plugin-auth-backend is an A Backstage backend plugin that handles authentication Affected versions of this package are vulnerable to Open Redirect via the allowlist matching process. An attacker can intercept authorization codes by registering an OAuth client with a crafted...

Out-of-bounds Write

Overview Magick.NET-Q16-HDRI-OpenMP-x64 is a Magick.NET allows you can use ImageMagick without having to install ImageMagick on your server or desktop. More information about specific builds see the official docs https://github.com/dlemstra/Magick.NET/tree/main/docs Affected versions of this...

open-webui (>=0.8.0, <=0.8.8) potentially affected by CVE-2026-61632 via pymdown-extensions (10.20.1)

pymdown-extensions PYPI version 10.20.1 is affected by a known vulnerability. The following packages have a transitive dependency on pymdown-extensions and may be impacted: - open-webui =0.8.0, =0.8.8 Source cves: CVE-2026-61632 Source advisory: OSV:GHSA-9XWG-3R6F-JCX2...